

433 



i 





a 



Fig. 3 



a, Phoma macropyrenia ; b, Plwmopsh praetervisa ; r, Oolletotrichwn, 



all from Moller's specimen. 



i/«6. ibidem. The '" perithecia " described by Thtirnen seem 

 to be a confusion of these two species. 



This Plwmopsis differs from 1 J . Ricini, Gr. in (1) the epidermis 

 not blackened over the pycnidium, (2) each not being surrounded 

 by a black stain, (3) the upper part falling away and leaving a 

 disc (see below, p. 437). 



III. — The third fungus, which is small in quantity, is a 

 Colletotriehum, very like C. gloeosporoides, Penz. or C. j\Ial- 

 varum, South w. It has spores longer and more cylindric than 

 those of the two just described, 14-18 x 4-4*5 p, filled with 

 granular protoplasm, and provided occasionally with an irregular 

 guttule : the sporophores are pale-brownish, oblong, crowded, 

 obtuse at apex, 20-35 x 3-4 fx 9 rising from a thick soft yellowish - 

 brown stratum of minute parenchymatous cells. The proliferous 

 stratum is surrounded by a small number (15-20) of inconspicuous 

 brown hairs of the usual kind, 40-60 u long. (Fig. 3, c.) 



836. Phoma Euphorbiae, Sure. 



Phomopsis Eitpiiohhiae, Ivor. I.e. p. 233. 



Pycnidia occupying little oblong-sinuous dark-grey (not black) 

 areas of the stem, covered by the epidermis, greyish-black, about 



180 p diam. Spores oblong-ellipsoid, rather obtuse at both ends. 



often biguttuhite, 6 7 x 2-2 '5 p ; sporophores crowded, aeiculai, 



12-14 x To p. 



On stems of Euphorbia Characias, Collioure, Trance (Eoum. 

 Fung. Gall. exs. no. 1105!). On stems of Euphorbia palu*tris, 

 Birmingham. The pycnidia! stage of Diaporthe Euphorbuie, 

 Cooke. 



871. Phoma lathyrina, Save. 



Phomopsis lathyrina, Grove. 



Pycnidia gregarious, orbicular, convex or globose-depressed, 

 covered but rather prominent, black, somewhat shining, up to 

 400 p diam., surrounded by a dull blackish halo, and sometimes 

 two or three enclosed by a sinuous Diapurthe-like line, at length 

 dropping out and leaving a paler pit: texture thick above, 



blackish-brown. Spores < 

 often biguttulate, somet 



]iiil 



s-10 



